Preparation, Thermal Analysis and Spectral Characterization of the 1:1 Complexes of Mercury(II) Halides and Pseudohalides with 3,4,5,6-Tetrahydropyrimidine-2-thione. Crystal Structures of Bis(3,4,5,6-tetrahydropyrimidine-2-thione-S)mercury(II) Tetrachloro and Tetrabromomercurate(II)

Popović, Zora and Matković-Čalogović, Dubravka and Pavlović, Gordana and Soldin, Željka and Giester, Gerald and Rajić, Maša and Vikić-Topić, Dražen (2001) Preparation, Thermal Analysis and Spectral Characterization of the 1:1 Complexes of Mercury(II) Halides and Pseudohalides with 3,4,5,6-Tetrahydropyrimidine-2-thione. Crystal Structures of Bis(3,4,5,6-tetrahydropyrimidine-2-thione-S)mercury(II) Tetrachloro and Tetrabromomercurate(II). Croatica Chemica Acta, 74 (2). pp. 359-380. ISSN 0011-1643

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Abstract

Mercury(II) complexes of the type HgX2(H4pymtH) (X = Cl–, Br–, I–, SCN–, CN–; H4pymtH = 3,4,5,6-tetrahydropyrimidine-2-thione) have been obtained and structurally characterized by X-ray diffraction, IR, 1H and 13C NMR spectroscopy. Single crystal X-ray structure analysis was performed for the chloro and bromo complexes, which were found to be isostructural. Their crystal structures consist of [Hg(H4pymtH)2]2+ complex cations and [HgX4]2- complex anions interconnected by Hg...X contacts into puckered sheets. The crystal structure of H4pymtH has been redetermined to greater accuracy. In solution NMR spectra of complexes, the greatest complexation effects were found on the 13C chemical shift of the thioketo-carbon atom and on the 1H chemical shift of the NH protons.

Item Type: Article
Keywords: mercury(II) complexes; heterocyclic thiones; crystal struc- ture; thermal analysis; 1H and 13C NMR spectra
Date: 2001
Subjects: NATURAL SCIENCES > Chemistry
Divisions: Faculty of Science > Department of Chemistry
Publisher: Hrvatsko kemijsko društvo
Related URLs:
Depositing User: mag. bibl. Ana Šafran
Date Deposited: 23 May 2014 11:09
Last Modified: 23 May 2014 11:09
URI: http://digre.pmf.unizg.hr/id/eprint/1644

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